Physics Help Forum Particle accleration under gravity waves?

 Physics Physics Forum - General Physics Discussion and Physics News

 Feb 13th 2017, 04:22 AM #1 Junior Member   Join Date: Oct 2016 Posts: 8 Particle accleration under gravity waves? I have been through following papers for research: 1)http://cdsads.u-strasbg.fr/cgi-bin/n...;filetype=.pdf 2)https://arxiv.org/pdf/gr-qc/9905054.pdf Conclusion of the second paper given above states the following: " In this case the external action (the gravitational wave) amounts to a time variation of the frequency parameter of the initial system (charged particles in a magnetic field), so that in the overall system the equilibrium at rest (x 1 = 0) is unstable. Any deviation from this state, however small, is sufficient to lead to a rapidly increasing displacement along the peprendicular direction (Landau and Lifshitz 1976). Further analysis shows that, in any of the above propagation cases, the overall result would be an exponential increase of the perpendicular energy of the particles involved in this interaction, as a function of the affine parameter and, hence, of their proper-time as well. " From the conclusion I can understand that gravitational blueshift may be the reason for increasing frequency but what could be the reason for perpendicular displacement of particles and exponential increase in perpendicular energy? Last edited by ab1994; Feb 13th 2017 at 10:52 PM.
Feb 13th 2017, 11:52 AM   #2

Join Date: Apr 2008
Location: On the dance floor, baby!
Posts: 2,169
 Originally Posted by ab1994 I have been through following papers for research: 1)http://cdsads.u-stra...8;filetype=.pdf 2)https://arxiv.org/pd...-qc/9905054.pdf Conclusion of the second paper given above states the following: " In this case the external action (the gravitational wave) amounts to a time variation of the frequency parameter of the initial system (charged particles in a magnetic field), so that in the overall system the equilibrium at rest (x 1 = 0) is unstable. Any deviation from this state, however small, is sufficient to lead to a rapidly increasing displacement along the peprendicular direction (Landau and Lifshitz 1976). Further analysis shows that, in any of the above propagation cases, the overall result would be an exponential increase of the perpendicular energy of the particles involved in this interaction, as a function of the affine parameter and, hence, of their proper-time as well. " From the conclusion I can understand that gravitational blueshift may be the reason for increasing frequency but what could be the reason for perpendicular displacement of particles and exponential increase in perpendicular energy?
Neither of the links are working.

Before we continue I would like you to define the term "perpendicular energy." Do you "perpendicular energy flux?" That's the energy flux that comes from, for example, radiation loss in a synchrotron due to charged particles moving in a curved path.

-Dan
__________________
Do not meddle in the affairs of dragons for you are crunchy and taste good with ketchup.

See the forum rules here.

Feb 13th 2017, 10:56 PM   #3
Junior Member

Join Date: Oct 2016
Posts: 8
 Originally Posted by topsquark Neither of the links are working. Before we continue I would like you to define the term "perpendicular energy." Do you "perpendicular energy flux?" That's the energy flux that comes from, for example, radiation loss in a synchrotron due to charged particles moving in a curved path. -Dan

and just in case:

2)https://arxiv.org/pdf/gr-qc/9905054.pdf

 Feb 14th 2017, 04:55 PM #4 Forum Admin     Join Date: Apr 2008 Location: On the dance floor, baby! Posts: 2,169 FYI: I'm not ignoring you, just reading through the articles.... -Dan __________________ Do not meddle in the affairs of dragons for you are crunchy and taste good with ketchup. See the forum rules here.
 Feb 15th 2017, 06:08 PM #5 Forum Admin     Join Date: Apr 2008 Location: On the dance floor, baby! Posts: 2,169 I'm afraid I'm going to have to ask you to either really be patient or try to find another source. It's just too much to absorb in a short time. If you like I can keep working at it but it'd probably be faster to find someone else. I don't often have a lot of good to say about them but I'd recommend PhysicsForums.com. There are several annoying people working there but I have no problem with the the overall ability of the members. -Dan NikPerk likes this. __________________ Do not meddle in the affairs of dragons for you are crunchy and taste good with ketchup. See the forum rules here.
Feb 16th 2017, 12:15 AM   #6
Junior Member

Join Date: Oct 2016
Posts: 8
 Originally Posted by topsquark I'm afraid I'm going to have to ask you to either really be patient or try to find another source. It's just too much to absorb in a short time. If you like I can keep working at it but it'd probably be faster to find someone else. I don't often have a lot of good to say about them but I'd recommend PhysicsForums.com. There are several annoying people working there but I have no problem with the the overall ability of the members. -Dan
Although its a little difficult to get straight answer from them I will give it a try.

Feb 16th 2017, 07:51 AM   #7

Join Date: Apr 2008
Location: On the dance floor, baby!
Posts: 2,169
 Originally Posted by ab1994 Although its a little difficult to get straight answer from them I will give it a try. I appreciate your help.
Aside from some arrogant personalities that's the same problem I have with them. I sympathize.

-Dan
__________________
Do not meddle in the affairs of dragons for you are crunchy and taste good with ketchup.

See the forum rules here.

 Tags accleration, blueshift, gravity, particle, waves

 Thread Tools Display Modes Linear Mode

 Similar Physics Forum Discussions Thread Thread Starter Forum Replies Last Post llawerif Quantum Physics 1 Oct 16th 2016 02:34 PM timemachine2 Light and Optics 0 May 1st 2016 01:34 AM noabsortion1 Light and Optics 0 Apr 27th 2016 08:57 PM ashishkrish09 Kinematics and Dynamics 2 Sep 21st 2011 03:46 PM lkerry Kinematics and Dynamics 2 Sep 20th 2008 03:37 PM